Question

Below, the two-way table is given for aclass of students.smoaFreshmenSophomoreJuniorsSeniorsTotalMale462246.3Female 3TotalIf a student is selected at random, find theprobability the student is a senior. Roundto the nearest whole percent.[?]%

Answer 1

Add the numbers on the "Senior" column to find the total amount of senior students:

`2+3=5`

Add all the numbers on the table to find the total amount of students:

`4+3+6+4+2+6+2+3=30`

Divide the total number of Senior students over the total amount of students to find the probability the student is a senior if a student is selected at random. Multiply the result by 100% to write it as a percent:

`(5)/(30)*100\text{ \%=}(1)/(6)*100\text{ \%}=16.666\ldots\text{ \%}`

To the nearest whole percent, the probability is:

`17\text{ \%}`